Ah okay, well I'll give two small hints: you need either information or an item from all of the other pages to free three and one, and the blood tree needs one item and the dial puzzle solved to be freed
Viewing post in Under the Pages jam comments
Blood tree, Fae and Fire are free ʕ→ᴥ←ʔ
The troll has 4 'N' looking runes left and I fed him everything I could find (inc jam), I want to give him Hawthorne as it says "most of it's edible" but he won't have any of it lol
Three-and-one has had Fae and Tree's item, so I think only whatever Troll says to do next is what will free them.
YES! I finished it!!! (Non-spoiler ending screenshot as proof lol) I had no idea to click on the specific N rune to do that part, I clicked on one earlier but mustn't have noticed the one I needed flashed red 彡(-ω-;)彡 it might be useful to keep that rune glowing at all times to highly imply it wants a click lol